In September, 1929, petitioner, the Prudence Company, Inc., undertook to make a mortgage loan of $6,-650,000 in aid of the construction of Essex House, an apartment hotel in the City of New York. The borrower covenanted that the building would conform to plans and specifications, and would be completed not later than December 16, 1930. As part of the same transaction, two surety companies, - the respondents in this court, signed a bond in the sum of $3,000,000, indemnifying the lender against loss through the failure of the borrower to construct' and pay for a building conforming to the contract, and complete it by the stated time. The bond also provided that in the event of the borrower’s default, the lender, if it so elected, should be at liberty to go forward with the work, and charge the cost against the sureties. Other conditions are believed to be immaterial to any-question now before us.
On December 16, 1930, the borrower made default under the mortgage, abandoning the work with the building then unfinished. At that time the petitioner’s advances under the building loan agreement were $6,575,-000, the full amount promised, less $75,000 retained by agreement. On December 18, 1930, petitioner through its nominee brought suit in the state court for the foreclosure of the mortgage. On January 6, 1931, it went into possession with the mortgagor’s consent. On January 19, 1931, there was a judgment of foreclosure, followed by a sale on March 17, 1931, at which the mortgagee was the buyer, the bid of $6,000,000 being applied upon the mortgage.- A-deficiency judgment of $716,215.02 was entered the next month.
Petitioner in' possession of the building went on with the unfinished work, bringing it to completion in October, 1931. An action on the bond was. then begun against the sureties. The trial court gave judgment for damages in the sum of $798,416.81, made up of three classes of items: